System and method for providing magnetic based navigation system in dental implant surgery

Abstract

A system and method for providing magnetic based navigation in dental implant surgery is disclosed. According to one embodiment, a surgical navigation system comprises a custom piece that is made to fit in a patient's anatomy and comprises a first magnetic component. The surgical navigation system further comprises an instrument assembly comprising a drill bit and a second magnetic component. A processing unit receives and displays a first position and orientation data from the first magnetic component with respect to a second position and orientation data from the second magnetic component to track the movement of the first magnetic component with respect to the second magnetic component.

What is claimed is: 
     
         1 . A surgical navigation system comprising:
 a custom piece made to fit in a patient's anatomy, the custom piece comprising a first magnetic component;   an instrument assembly comprising a drill bit and a second magnetic component;   a processing unit receiving at least one of a first position and orientation data from the first magnetic component and a second position and orientation data from the second magnetic component; and   a display displaying the at least one of the first position and orientation data of the first magnetic component and the second position and orientation data of the second magnetic component.   
     
     
         2 . The surgical navigation system of  claim 1 , wherein the first magnetic component is a magnetic transmitter, and the second magnetic component is a magnetic sensor. 
     
     
         3 . The surgical navigation system of  claim 2 , wherein the magnetic sensor receives signal transmitted from the magnetic transmitter and determines the second position and orientation data based on the received signal from the magnetic transmitter. 
     
     
         4 . The surgical navigation system of  claim 1 , wherein the first magnetic component is a magnetic sensor, and the second magnetic component is a magnetic transmitter. 
     
     
         5 . The surgical navigation system of  claim 1  further comprising a magnetic transmitter, wherein the first magnetic component and the second magnetic component are magnetic sensors receiving signals transmitted from the magnetic transmitter. 
     
     
         6 . The surgical navigation system of  claim 1 , wherein the custom piece is fabricated based on a virtual piece created from a CT scan or a dentition surface model of the patient using a planning software. 
     
     
         7 . The surgical navigation system of  claim 6 , wherein the dentition surface model is generated from a CT scan of a patient's impression, an optical scan of a patient's impression, a stone model, an intra-oral scan, or any combination thereof. 
     
     
         8 . The surgical navigation system of  claim 1 , wherein the custom piece is fabricated with an intra-oral scan data of the patient merged to the CT scan data of the patient. 
     
     
         9 . The surgical navigation system of  claim 1 , wherein the processing unit generates a warning sign of unreliable tracking or an occurrence of magnetic field interference of at least one of the first magnetic component and the second magnetic component. 
     
     
         10 . The surgical navigation system of  claim 9 , wherein the warning sign is one of an audible feedback, a visual feedback, and a haptic feedback. 
     
     
         11 . The surgical navigation system of  claim 1  further comprising a registration apparatus for registering an offset of the drill bit, wherein the offset is measured from the second magnetic component to a tip of the drill bit. 
     
     
         12 . The surgical navigation system of  claim 1 , wherein the custom piece further comprises a calibration feature to calibrate the instrument assembly with respect to the custom piece. 
     
     
         13 . A method comprising:
 receiving a first position and orientation data of a first magnetic component;   processing the first position and orientation data of the first magnetic component with respect to a second position and orientation data of a second magnetic component;   tracking the first position and orientation of the first magnetic component with respect to the second magnetic component.   
     
     
         14 . The method of  claim 13 , wherein the first magnetic component is integrated with a custom piece made to fit in a patient's anatomy and the second magnetic component is integrated with an instrument assembly comprising a drill bit. 
     
     
         15 . The method of  claim 13 , wherein the first magnetic component is a magnetic transmitter, and the second magnetic component is a magnetic sensor. 
     
     
         16 . The method of  claim 14 , wherein the magnetic sensor receives signal transmitted from the magnetic transmitter and determines the second position and orientation data based on the received signal from the magnetic transmitter. 
     
     
         17 . The method of  claim 13 , wherein the first magnetic component is a magnetic sensor, and the second magnetic component is a magnetic transmitter. 
     
     
         18 . The method of  claim 13 , wherein the first magnetic component and the second magnetic component are magnetic sensors receiving signals transmitted from a magnetic transmitter. 
     
     
         19 . The method of  claim 13 , wherein the custom piece is fabricated based on a virtual piece created from a CT scan or a dentition surface model of the patient using a planning software. 
     
     
         20 . The method of  claim 13  further comprising generating a warning sign of unreliable tracking or an occurrence of magnetic field interference of at least one of the first magnetic component and the second magnetic component. 
     
     
         21 . The method of  claim 20 , wherein the warning sign is one of an audible feedback, a visual feedback, and a haptic feedback. 
     
     
         22 . The method of  claim 13  further comprising registering an offset of the drill bit, wherein the offset is measured from the second magnetic component to a tip of the drill bit. 
     
     
         23 . The method of  claim 13  further comprising providing at least one calibration feature to calibrate the instrument assembly with respect to the custom piece.